/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package com.epam.dlab.backendapi.core.response.handlers;

import com.epam.dlab.backendapi.core.commands.DockerAction;
import com.epam.dlab.dto.UserInstanceStatus;
import com.epam.dlab.dto.base.edge.EdgeInfo;
import com.epam.dlab.dto.base.keyload.UploadFileResult;
import com.epam.dlab.exceptions.DlabException;
import com.epam.dlab.rest.client.RESTService;
import com.fasterxml.jackson.annotation.JacksonInject;
import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.databind.JsonNode;

import java.io.IOException;

public class EdgeCallbackHandler<E extends EdgeInfo, T extends UploadFileResult<E>> extends ResourceCallbackHandler<T> {
	@JsonProperty
	private final String callbackURI;
	@JsonProperty
	private final Class<E> responseType;

	@JsonCreator
	public EdgeCallbackHandler(
			@JacksonInject RESTService selfService, @JsonProperty("action") DockerAction action,
			@JsonProperty("uuid") String uuid, @JsonProperty("user") String user,
			@JsonProperty("callbackURI") String callbackURI,
			@JsonProperty("responseType") Class<E> responseType,
			@JsonProperty("resultType") Class<T> enclosingType) {

		super(selfService, user, uuid, action, enclosingType);
		this.callbackURI = callbackURI;
		this.responseType = responseType;
	}

	@Override
	protected String getCallbackURI() {
		return callbackURI;
	}

	protected T parseOutResponse(JsonNode resultNode, T baseStatus) {
		if (resultNode != null && getAction() == DockerAction.CREATE
				&& UserInstanceStatus.of(baseStatus.getStatus()) != UserInstanceStatus.FAILED) {
			try {
				E credential = mapper.readValue(resultNode.toString(), responseType);
				credential.setEdgeStatus(UserInstanceStatus.RUNNING.toString());
				baseStatus.withEdgeInfo(credential);
			} catch (IOException e) {
				throw new DlabException("Cannot parse the EDGE info in JSON: " + e.getLocalizedMessage(), e);
			}
		}

		return baseStatus;
	}

	@Override
	public void handleError(String errorMessage) {
		super.handleError("Could not upload the user key: " + errorMessage);
	}
}